Shingle-bolt-sawing machine



E. TALBOT AND N. CAMPBELL.

fSHlNGLE BOLT SAWING MACHINE.

APPLICATION ULEB nEc.26,1919.

1,362,576. Patented Dec. 14, 1920.

55 l J6 J5 IEIIIEIEIlE-EIUGIEMHI 355 mmm 57 ull-mw l( 55 ATTORNEY UNITED STATES ERNEST TALBOT AND NAPOLEON CAMPBELL, OF SEATTLE, WASHINGTON.

SHINGLE-BOLT-SAWING MACHINE.

Specification of Letters Patent. Patented Dec. 14, 1920.

Application-filed December 26, 1919. Serial No. 347,349. A

To all 'whom t may concern:

Be it known that we, .ERNEST TALBOT andv NAPOLEON CAMPBELL, citizens of the United known as bolting and sapping machines.

The obj ect of our invention is the improvement in machines of this character whereby the work may be more, expeditiously and inexpensively accomplished than hitherto.

The inventionconsists in the novel construction, arrangement and combination of parts as will be hereinafter described and claimed.

VIn the accompanying drawings, Figure 1 isa plan view of a shingle-boltingand sapping machine embodying our improvements. Fig. 2 is a longitudinal vertical section through 2-2 of Fig. 1. Fig. 3 is atransverse sectional view taken 4substantially through 3 3 of Fig. `1; and Fig. 4 is an end elevational viewof the right hand end of Fig. 3, with' the-roller retaining ring .removed.V l

In said drawings, the reference numerals A and BY designate endless conveyer chains passing'about sprocket wheels 21 and 22 mounted upon a transverseshaft' 23 adjacent to one end ofthe machinefand sprocket wheels 31 and 32^mountedupon a transverse shaft 33 adjacent to the other end of the machine. The upper leads of said chains are guided for travel to have their top surfaces in a horizontal plane by being supported in channel bars 4 which are themselves supported by transverse beams 41 which, in turn, are supported by sill members 42 and constitute therewith the frame of the machine.

The shafts 23 and 33 are driven by trains of gears, each train including spur wheels 51, 52 and friction wheels 53, 54 through the medium of an intermediate shaft 55 from a shaft 56 which is driven by means of a power belt (not shown) passing about a pulley 57 upon the respective shaft 56.

Said trains of gears are driven to cause the associated shafts 23 and 33 to be rotated normally in the directions indicated by arrows m and y, respectively, in Fig. 2.

The shafts 23 and 33, may, however, be rotated oppositely to those denoted by the respective direction arrows by disconnecting the spur wheels 51 from the respective shafts. For which purpose, by preference, we make a wheel 51 shown in Figs. 3 and 4, with an outer rim 511 having a centrali bore to receive a circular spider 512 whose hub is keyed lto the respective shaft. In ,the periphery of said spieler' is provided a plurality of substantially triangular recesses 513 ywhich accommodate balls or rollers 514' which serve to engage the spider to the rim when the latter is rotated asindicated by arrow c in Fig. 4 but allow therimv511 to rotate independently of the spider in the opposite direction. The above described meansrv for releasably coupling a rim and spider is, in itself, not new and its operation is obvious. y '4 The sprocket wheels 21 and 32 are keyed or otherwise secured to the shafts 23 and 33.

The other sprocket 4wheels'22 and 31 are shafts and are shiftable by means of forked levers 27 and 37 into or out of engagement with their companion members to accordingly couple .or uncouplethe sleeves 24 and 34l and the associated sprocket wheels 22 and 31 with or from the respective shafts. In

orderl toregulate the sliding clutches in unisonso that one of them will be disengaged prior to the other one being engaged we em ploy a connecting rod 6 between the levers 27 and 37. An arm, as 38, of one of said levers may be extended to within convenient reach of the operator for regulating the clutches.

8 represents a circular saw rotatable in a plane between the A and B sets of conveyer chains, said saw being ymounted on an arbor 7 which is journ aled in boxes 71 of a hanger frame 72 and driven by a power belt, not shown, passing about the arbor pulley 73.

In operation, a block is placed upon end on chains A and B in front of the saw S and by actuating all of the sprocket wheels 21 and 22 on shaft 23 the block is fed by the chains in the direction of arrow d, Fig. 2, against and by the saw to effect the removal of a slab of sap wood from the block or the cutting of the block into bolts.

By rendering the power inoperative with respect to shaft 23 and actuating the shaft 33, with the sleeve 34 coupled to the latter, both parts of the block thus sawed may be returned to the right hand end of the machine; or by having the sleeve disengaged, but one part may be returned. By placing ablock upon both setsof chains A and B and operating them in kopposite directions a block can be most conveniently turned. When abolt has been cut from a block it may be discharged from a selected end of the machine by causing either set of chains, A or B, to be suitably actuated while the other set remains idle or is operated to feed a block to and by the saw for removing thereby a slab from such block.

What we claim, is-

1. In a bolt-sawing machine, the combination with a vertical saw, of bolt feeding devices providedat opposite sides ofthe saw, and means to cause said devices to travel simultaneously in the same or opposite directions.

2.y Ina bolt-sawing machine, the combination with a saw, of a set of power actuated feeding devices at each side of the` saw, said devices being arranged to have both sets thereof actuated for passing bolts against and by the saw and also in a reverse direction thereto. f t Y Y 3. In a bolt-sawing machine, the combination with a saw, of abolt carrier provided at each side of the saw, means to Yimpart motion .selectively to one or both of said carriers to feed bolts toV and by the saw.

4. In a bolt-sawing machine, the combination with a saw of a bolt carrier provided at each side of the saw, means to impart' feeding motion to both of said carriers for conveying a bolt to and by the saw, andmeans whereby one of said carriersis caused to travel in a reverse direction independently of the other carrier.

5. In abolt-sawing machine, two sets of endless feed chains, means to drive both sets of said chains, operative connections between said means and each set of chains in bolt feeding direction or in a reverse direction selectively, and means for regulating the aforesaid connections whereby the two sets of chains are simultaneously driven in opposite directions. A

6. In a boltfsawing machine, the combination with the machine frame, and a cir-4 cular saw disposed intermediate the'rlength of said frame, of feed devices consisting of a set of conveyer chains at each side of theV saw, sprocket wheels for said chains, shaftsV adjacent to each end of the frame for said sprocket wheels, means for releasablyconf necting the sprocket wheels for fone set of chains to one of said shafts and the wheels for the other set to the other shaft selec-I tively, .and power actuated means to driveY the shafts in oppositie rotary directions.

7. In a bolt-sawing machine,' the combination with the machine frame, and a circular saw disposed intermediate thelength of said frame, of feed devices'consisting of a set fof conveyer chains at each side of .theV saw,

sprocket'wheels for `said chains,'shafts ad-k jacent to each end of the frame for said Y sprocket wheels, means' for releasably con! necting the sprocket wheels for. one set of chains to one of said shafts andthe -wheels for the other set tothe other shaft selectively, power actuatedmeans to drive the shafts in oppositevrotary directions, and de-V 

